GREENLEE DTAPM4C Drill/Tap Bit 1/4 in Shank

Complete hole drilling, tapping and deburring/countersinking in one operation with power drill saves labour and time. Back tapered beyond tap to prevent thread damage from over-drilling. Deburr/countersink also provided on bit beyond back taper. Made from hardened high-speed steel vs carbon steel for longer life. High quality hex shank to ensure strong connection to drill chuck. Designed to tap up to 10-gauge metal. Quick change adaptor included in both metric and standard kits.